Vortex 840CKV4-42 VTX Aluminum Rear Sprocket Chain Pitch Sprockets - 42T 840

The Vortex 840CKV4-42 is a high-performance 42-tooth aluminum rear sprocket from Vortex's VTX series, designed for motorcycles using an 840 chain pitch. Engineered for both street and track applications, this sprocket delivers a lightweight alternative to stock steel units without sacrificing durability or precision.

Key Features:

• Material: Aircraft-grade 7075-T6 aluminum construction for an optimal strength-to-weight ratio
• Tooth Count: 42 teeth for fine-tuned gearing performance
• Chain Pitch: 840 — ensures proper fitment and smooth power transfer
• Series: VTX (CKV4) — Vortex's precision-machined rear sprocket line
• Finish: Hard anodized for corrosion resistance and extended service life
• CNC Machined: Tight tolerances for consistent engagement and reduced drivetrain wear
• Weight Savings: Significantly lighter than OEM steel sprockets, reducing unsprung and rotating mass

Vortex is a trusted name in the powersports industry, known for producing race-proven drivetrain components. The 840CKV4-42 rear sprocket is a direct-fit upgrade that improves throttle response and overall drivetrain efficiency. Always replace the chain and front sprocket together for optimal wear and performance.